error[E0133]: mutation of layout constrained field is unsafe and requires unsafe function or block
  --> $DIR/ranged_ints2_const.rs:14:13
   |
LL |     let y = &mut x.0;
   |             ^^^^^^^^ mutation of layout constrained field
   |
   = note: mutating layout constrained fields cannot statically be checked for valid values

error[E0658]: mutable references are not allowed in constant functions
  --> $DIR/ranged_ints2_const.rs:14:13
   |
LL |     let y = &mut x.0;
   |             ^^^^^^^^
   |
   = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
   = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable

error[E0658]: mutable references are not allowed in constant functions
  --> $DIR/ranged_ints2_const.rs:21:22
   |
LL |     let y = unsafe { &mut x.0 };
   |                      ^^^^^^^^
   |
   = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
   = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable

error[E0658]: mutable references are not allowed in constant functions
  --> $DIR/ranged_ints2_const.rs:27:22
   |
LL |     unsafe { let y = &mut x.0; }
   |                      ^^^^^^^^
   |
   = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
   = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0133, E0658.
For more information about an error, try `rustc --explain E0133`.